Rotary drawworks



I 1386- 5, 1931- D. s. FAULKNER ET AL 1,836,057

ROTARY DRAWWORKS Fil ed June 21-. 1926 4 Sheets-Sheet 1 gwuentou Dec. 15, 1931.

D. S. FAULKNER ET AL ROTARY DRAWWORKS Filed June 21, 1926 4 Sheets-Sheet 2 Dec. 15, 1931.

D. S. FAULKN ER ET AL ROTARY DRAwwoRKs 4 Sheets-Sheet s Filed June 21, 1925 Dec- 1931- D. s. FAULKNER ET AL 1,836,067

ROTARY DRAWWORKS Filed June 21, 1926 4 Sheets-Sheet 4 gwvmtm W 15 W W 61mm Patented Dec. 15, 1931 UNITED STATES P V 'iC EYF V- DAVID s. FAULKNER AND EDWARD TIMES, or LOS Anennns', cAnI'ronNIn, ns'srenons TO THE NATIONALSUPPLY COMPANY or DELAWARE, on new: YORK, N, Y., A con- PORAT'ION or DELAWARE ROTARY nn nwwonxs 7 Application filed June 21,

This invention relates to a rotary drawworks such as is employed in the rotary process of drilling wells. 7

The principal object of this invention is to provide a rotary drawworks in which the distance between the drawworks post is maintained at a minimum and which drawworks includes a drum of relatively large size, and which drum is constructed of aspool having 10 integral flanges and hub portions and towhich spool forged brake rims are secured.

Another object of this invention is to provide a three speed rotary drawworks in which the rotary drum is preferably adapted to'be l5 rigidly secured to the drum shaft, and which drum is constructed of a spool having rolled forged brake rims secured thereto and upon which brake rims brake bands of novelconstruction are positioned and held equally spaced or positioned upon the said brake rims by means of cables secured to the rotary drawworks beam and to the floor of the well derrick. v V i Another object of this invention is to 'provide a three speed rotary drawworks in which clutches are provided for releasably clutching the speed sprockets to the drum shaft and in which drawworks construction, novel Icontrol means are provided for the actuation and control ofthe said clutches.

Another object of this invention is to provide'a forged brakerim which is forged and rolled so asto insure great strength and long wear, together with the ability of such forged brake rim to afford a maximum smooth vbraking action. 7 v

Another object of this invention is to provide rolled forged brake rims for rotarydraw works, which rolled forged brake rims 'are not limited in their construction to the employment of low carbon steel and which may be made from a grade of steel especially suited to theworking conditions ofthe brake, thereby guaranteeing the maximum strength and wearing qualities for such a brake rim.

Another object of this invention is to provide rolled forged brake rims for a rotar 'draw Works which insures the highest maxiinum brake contact as well as brake power in where the same is secured.

, rolled-brake rim embodied "in this invention.

ment ofthe drum shaft.

speed clutch mechanism illustrated in F igall positions ofthe brake wheel with addi- 1926. Serial Iva-117,322.

tional safety over other types ofbrake rims now on the market and-to provide ac-brake rim which gives a true and smooth braking surface so as to avoid jerkine'ss in control 1 Another obj ect' of this invention is 'to'pro vide a rota-ryvdraw works drum construction in which means are provided forsecuring the cablewhich is wound upon thedrum firmly V in position to the brake flange sovasfto. avoid the possibility of breaking the line loose from the drum and wear upon the end ofthe line Other objects andadvantages ofthis in: vention will'be apparent from the following detailed "description of a-preferred 'embodi- 5 mcnt thereof, as illustrated inthe accompany- 1 in drawings, in which drawings": i- 1 b Figure .1 is a diagrammatic'top plan'view I of a well derrick illustrating a rotary'drawworks as embodying this inventionaspositioned'therein. 3 v I v 1 Figure 2 is a sideelevation partly in vertical mid-section of a rotary drawworksiembodying vthis invention. r v Figure 8 is an end elevation thereof, illustrating the low speed sprocket asbroken away to illustrate the forged brake rim construc- .tion and brake bands mounted thereon.

Figure i'is an isometric view cofe' a forged I Figure 5 is a fragmental sectionalrzf ront elevation illustrating thethirdspeed. clutch I mechanism embodied in this invention ,as illustrating the same as mounted upona frag- Figure 6 is an end elevation'thereofitaken substantially onthe =line;6.6,of Figure 5. Figure 7 is, a fragmental'sectional view illustrating the clutch faces of-thethird ure5. p

Figure 8 is a fragmental sideelevation of the rotary drum construction embodie'dvin this invention, illustratingthe cable securing means for securing the line cable tothe' said drum. 7 r 1 i Y Figure 9 is a fragmental end elevation of the cable securing means illustrated in Fig-' ure 8. 7

Figure 10 is a detached 'fragmental view 1100 of'a, brake band construction "embodied in i this invention and illustrating the brake securing means as provided for securing the dead end of the brake bands embodied in this invention. V

Figure 11 is a fragmental top plan view illustrating the unitary control supporting mechanism for the controls for the clutch means for each of the three-speed clutches of the rotary drawworksembodied in this inven-' tion. 7 v

In the preferred embodiment of this invention, illustratedin the accompanying'draw ings, 1 illustrates the floor ofthe well derrick. Mounted in the floor derrick is arotary drill- :inganachine -2 which is operated for, the purzpo 'e of rotating 'th rotary drill-Stem (not shown) ,tothe end of which the drilling bit (likewise not shown-)gis secured for drilling theihole in the groundto the depth required 'ordesir-ed The rotarydrillstem is supported upon aahydraulic swivel which is likewise not shown but which isliwell understood in the art: from or-ibyi cable 1 which passes over the :crown block of the derrick and is wound upon v the drumB ofthewrotary drawworks 4 which is mounted upon the derrickfloor loin substantiallythe-iposition illustrated in Figure 1.

1;,;; It isiessential. that) the drawworks 4 be as compact iasipossible, that is, that the distance between vthetouter posts '5 and 6 thereof be maintained at a-minimum so that the rotary driveisprocketfifi, which iscarried upon the linelfshaft 710f the rotary .drawworks a, will -align witlrthe drive sprocket .8 of the rotary drilling machine or apparatus-i2,iand also so that thescatheads 9 of the rotary draw- Works4 willinotibe extended too far; from alignment with the table. 10 ofthe rotary 'machine Qpas thecatheads 9 are employed with accat line in a manner well understood in the-art for. operating the tongs and like -drillinga:: i. mltiisalsoi essential inairotary drawworks Ithat-theline drum .8 thereof be in iposition so as tovmaintain the cable v11 thereof in apdevices-a's used forithei screwing up and :nnscrewing of the drill stemisections and for liketpurposes during the rotary 'process of proximate alignment with the crown block sheave over which the same is passed.

' In the drilling of deep wells particularly {wellsofwfivethousand depth or over, it is particularly desirable that the .drum 3 be not only of increased length between the flanges thereof, but that the diameter of the n spool of the -drum 3 be large so asto prevent vari'ation of the-speed of travel of the line ;11 .which-:is wound thereon as the said line is -coiled upon' the said spool. The increasing ;depth of Wells of course necessitates the provisionof increased. drum area for winding of the. linecableland this increased demand for length of the drum. 3 mustnot require an increased spreading of'the posts 5 and 6 of 1 and is connected through a chain drive with. a,sprecl n -t;v Iii-which is rigidly secured to the line shaft 7.

- The line shaft 7=is journaled in bearings which are secured touthe iendiposts 5 and 6 and the third post 14 of the draw works 4:. The :rota-ry drive sprocket 6 is loosely j'ournaled upon the shaft 7 and is preferably provided with a jaw-clutch15 for releasably engaging the sprocket .6 with the line shaft 7 when it is desired to operate the rotary machine 2, and which'sprocket 6 may be .dis-

engaged from the line shaft' 7, w heniit is desired to operate the'rotary fdignm 3-f9r hoisting or lowering the drill stem: into the well hole being formed. Thejaw-clutch15 nlay be of any desired orpreferred' construe tion and is herein illustrated-as comprising a clutch collar '16- which. is slidably keyed to the shaft 7 so as topermitlongitu'dinal movement of the collar 16 on the shaft 77am 7 so asto prevent rotation ofthe collar 16 rela tive to theishaft 7 so that the. jaw engaging facejlZ of theiclutch: collar 1'6may'be'moved into engagement withnthe aw-clutch erigaging face 18 which is preferably formed integral with. thehub offthe sprocket 6% The collar 16 has an annular groove formed threin intotwhich pins carried by the fork v1-9 extend for sliding the collar 16 on thesaid shaft 7. The fork 19' is pivotallyv supported by means of a bracket QOfWlllCll bracket :20

is secured to the beam21 which connects the posts 5, 6 14G ofhthe drawworksat their upper end. An actuating rod 22is secured to the fork 19 at apin23 and is securedfto an actuating lever 2 at its opposite. end at a -pini25.- A pawl and ratchet. latch means if;

26 are provided for latching the clutch 1collar' 16 into driving engagement with the sprocket 6 and the. pawl and ratchet. means and actuatinglever 24 are positioned at: the left of the drawworks as illustrated in Figure 3 so as to permit easy access of the operator ofthe drawworks from such .position' Keyed .to the line shaft? is a low speed sprocket 27, an intermediate. speed sprocket 28'and a high or third speed sprocket 29.;

, iMount-ed belowthe line shaft 7. and in bearings 30 is 'thedrum fshaft 31, upon which drum shaft 31 ilow interm'ediatei and third speed sprockets 32,:33and 34 arejournaled,

each of which sprock'ets is provided with by means of an acetylene torch or the'like clutch means for releasably-engaging the same with the'drumshaft 31 as will hereinafter be described-1 The drum 3 is keyed'to the drum shaft 31'; and is preferably constructed of a spool 35,which spool'35 is'preferably constructed of a cylindrical portion 36 which has at its opposite end downwardly in: 'clined integral flanges 37 which are formed integral with the oppositely extending hubs '38 which are keyed to the portions 39 of increased diameter of the drum shaft 31. A plurality of webs 40 are castintegral with the cylindricalportion' 36 0f the drum 3' for removing the same. Formed integral with and at opposite ends of the spool 35 are outwardly extending annular flanges 41; p Forged rolled brake rims 42 are provided and which forged rolled brake rims are preferably composed of a singleportion of steel forged while hot in a manner similar to the forging of rims for machine car wheels and the like and during the forging'are rolled at their outer edge with a downwardly extendflange -47 provides anedge shoulder 48 which fits the edge shoulder 49 formed by the an nular abutment 50 which is formed'integral with the flanges 41 of the spool 35. Rivets 51 are countersunk in the flanges 41 and extend through the annular flange 47 and are riveted over within the brake rims 42 so thatasubstantially flat surface is maintained at the interior ofthe spool flanges 41. The annular flange 47 of the brake rim 42 is cutaway at a plurality of points as illustrated at 52 so as to accommodate keys 53 which fit within'the cut awayv recesses 52 which are secured tothe flanges 41 at the increased portions 54 of the annular abutments 50 formed on thevouter surface of the flanges ,41. The keys 53 are 7 preferably secured to the flanges 41 by means of countersunk rivets 55. The rivets 51 and- 55 are preferably cold pressed into position by means of a jack interposed between the flanges 41 and their inner ends are then'heated and'rivted over by the use of a hydraulic riveting machine.

i We have discovered that the provision of forged rolled brake rims enables us to embody in the construction of our rotary draw works drum'brake rims which have chemical and physical characteristics which are best suited to the conditions of 'service,-:insuringgreaterstrength, longer wearingand theability to afford maximum smooth braking operation,

due-tothe ability to provide such forgedand rolled brake rimsof a .gra'de of metal which 5 is mostsuited for' its" production which is not limited to'the'use of low carbon steel and in thecase wheresuch brake rims are pressed by the material mostsuitedfor such brake rim construction, maybe employed so asto in-af sure the highest maximum brake contact as well as brak'e' power at allpossible positions ofthe brake wheel withadditional safety, due to 'th-eincreased and wearing qualities of 'any [other t'ype-ofbrake rims now on the market 5 and which includes not only the features of 7 additional stiflness but enables us to produce a brake rim which has an abosolutely true rim and braking surface, whereby'jerkine'ss 'of'control'may beavoided. V p

, The hub 38 at the left-hand end'of the 'spool 35. is formed so'as to extend into the interio'r of the'forged brake rim 42 and of sufficient length or extent to provide a firm bearing support for the dru1n 3 at that end and ex- $5 tends into the drum 42 so asto engage theend face 56'of the low speed sprocket 32 upon the drum shaft31. In order to accommodate for the clutch'57 for the third-speedsprocket 34, f the hub 38 formedat'the right end of the? spool35 extends inwardly into theinterior of the cylindrical portion 36 of the spool 35 and extends only slightly into the interior of the right hand rim 42 and is of'suflicient' extent to provide a firm bearing support at this end 1 of the drum 3. This hub 38at'the right hand end of the spool 35 extends inwardly int'o positionas before described so asto permit the mounting of the clutch collar '58 on the line shaft 31' for releasab'ly securing thethirdi:

speed sprocket 34 to the shaft 31.

Theflanges 42 are'formed with a plurality of webs 59' 'which extend outwardly from the hub 38 thereof to the'annular abutment 50 and are for the urpose of reinforcingfi' thefflanges 41.- Cast integral with theflanges '41 is a cable -race;60 into'which the cable 11 is extended through a bore 61 formedpreferably at theright hand flange 41 anda clamp 62 isisecured to the end of the cable 11 in positionpto engage the end of the race 60 so as to securelyfasten the cable 1-1 to the drum 3.

The clutch means provided for reasonably clutching the third speed sprocket 34 to the drum shaft 31 is preferably composed of 21271 I clutch collar 58-which is keyed to the shaft 31 so as to be-longitudinally slidable'there- H on and is provided atits end engaging face with a cylindrical cut away recess-63 which has formed on itsinner face 64 a plurality of clutch projections 65 which are adapted to engage the clutch segments 66, which are formed integral withthehub67 of the third speed sprocket 34, which third speed sprocket 34 is loosely journaled upon the-shaft 313and spirit of our invention as set forth in the appended claim.

We claim:

In combination with a rotary draw works,

a drum comprising a spool having outwardly extending flanges formed integral therewith, oppositely extending hubs formed integral with the said spool, one of which hubs extends into the interior of the spool and the other of which hub extends outward from the said spool, and forged rolled brake rims secured to the said flanges.

Signed at Torrance, Calii, this 10th day of June, 1926. i

' DAVID S. FAULKNER.

EDWARD TIMBS. 

